Distribution characteristics of nine main components of Huanglian Jiedu Decoction in rat brain / 中草药

ABSTRACT

Objective: To establish a sensitive, accurate and reliable LC-MS-MS analysis method for the nine major components (berberine, berberrubine, jatrorrhizine, palmatine, baicalin, wogonin, oroxylin A, geniposide and gardenin B) in Huanglian Jiedu Decoction (HJD) in rat hippocampus, cortex, striatum, and cerebrospinal fluid, and to study the distribution characteristics of the components in brain tissues of rats. Methods: The mass spectrometry detection conditions and chromatographic analysis conditions of nine main components and internal standards (clarithromycin and chloramphenicol) was optimized, and then the methodological investigations were performed. After HJD was administrated for 1 h, the samples of cerebrospinal fluid, hippocampus, cortex and striatum tissues were collected, and the contents of nine components in these samples were measured. Results: Berberine, jatrorrhizine, palmatine, baicalin, wogonin, oroxylin A and gardenin B showed a good linear relationship in the range of 1-250 ng/mL (r2 > 0.99). Berberrubine had a good linear relationship in the range of 1-500 ng/mL (r2 = 0.991 2), and geniposide had a good linear relationship in the range of 5-500 ng/mL, respectively (r2 = 0.999 5). The intra-day and inter-day precision of each component was less than 12.94%, the accuracy was from -12.71% to 6.91%; The extraction recovery rate was from 88.02% to 106.7%; The matrix effect was from 88.92% to 105.10%; And the short-term, freeze-thaw cycle and long-term stability were less than 12.51%. The content of each component in the hippocampus, cortex and striatum was berberine > baicalin > geniposide > berberrubine > palmatine > wogonin > jatrorrhizine > oroxylin A > gardenin B; And the content of each component in cerebrospinal fluid was geniposide > berberine > berberrubine > palmatine > baicalin> gardenin B > jatrorrhizine > wogonin > oroxylin A. Conclusion: The method can be used for the simultaneous detection of the concentration of nine active components in brain tissues of rats, and successfully applied to the study of brain tissue distribution, which provides a reference for HJD to treat brain diseases.